Are you using the wall charger? Not sure what's causing it. Try recalibrating the battery.
The quickest way (and really the only way) to charge your iPad is with the included 10W USB Power Adapter. iPad will also charge, although more slowly, when attached to a computer with a high-power USB port (many recent Mac computers) or with an iPhone Power Adapter (5W). When attached to a computer via a standard USB port (most PCs or older Mac computers) iPad will charge very slowly (but iPad indicates not charging). Make sure your computer is on while charging iPad via USB. If iPad is connected to a computer that’s turned off or is in sleep or standby mode, the iPad battery will continue to drain.
Apple recommends that once a month you let the iPad fully discharge & then recharge to 100%.
How to Calibrate Your Mac, iPhone, or iPad Battery
At this link http://www.tomshardware.com/reviews/galaxy-tab-android-tablet,3014-11.html , tests show that the iPad 2 battery (25 watt-hours) will charge to 90% in 3 hours 1 minute. It will charge to 100% in 4 hours 2 minutes. The new iPad has a larger capacity battery (42 watt-hours), so using the 10W charger will obviously take longer. If you are using your iPad while charging, it will take even longer. It's best to turn your new iPad OFF and charge over night. Also look at The iPad's charging challenge explained http://www.macworld.com/article/1150356/ipadcharging.html
Also, if you have a 3rd generation iPad, look at
Apple: iPad Battery Nothing to Get Charged Up About
Apple Explains New iPad's Continued Charging Beyond 100% Battery Level
New iPad Takes Much Longer to Charge Than iPad 2
Apple Batteries - iPad http://www.apple.com/batteries/ipad.html
Extend iPad Battery Life (Look at pjl123 comment)
New iPad Slow to Recharge, Barely Charges During Use
Tips About Charging for New iPad 3
How to Save and Prolong the battery life of your new ipad
Prolong battery lifespan for iPad / iPad 2 / iPad 3: charging tips
iPhone, iPod, Using the iPad Charger
Install and use Battery Doctor HD
In rare instances when using the Camera Connection Kit, you may notice that iPad does not charge after using the Camera Connection Kit. Disconnecting and reconnecting the iPad from the charger will resolve this issue.
thanks for the reply!
I'm using direct wall plug with the standard 5W charger, packaged together with the ipad mini. When the ipad is charging, i found out that the adapter got hot. I just tried charging again, it apparently only managed to charge till 91%, 1% more than before. I will try to a recalibration.
I am suspecting that it is due to the adapter overheating?
I hope the following can help.
Last night, I suddenly decided to use the charger of my iPhone 3GS to charge my problematic new iPad Mini. It has the same appearance and same output (5W , 1A) as the charger came with my new iPad Mini. Strangely, I found it worked and could fully (100%) charge my iPad Mini at one go when I waked up this early morning. I guess the 90% charge problem is probably due to some problematic chargers instead of iPad Mini.
As it takes time to spend the battery power and charge another times using different chargers to prove whether the problem is due to the charger, I don't know if my finding is a real solution. I hope any one, if meets the problem, can try himself/herself by using another charger (say from iPhone 3 or 4 of even from another iPad Mini) to see if the problem is really from charger.
I hope that your result can be shared with me.
If at the end the problem is proved from individual charger, replace it to solve.
What do you mean of "restart"? If it means once the battery level reaches 90% and stops charging, then you unplug the charger and re-plug it for further %, then you have encountered the same problem as mine. You may have a problematic charger as mine.
Knowing that your iPad can reach 100% through the above "restart", I guess the battery can be fully charged and so is not a battery problem.
If you have another charger from another iPad mini, iPhone etc. try it and see if it will charge the mini to 100% as one go. If no alternative charger, discuss with Apple directly for charger replacement as a first step or have the whole set replacement at this time.
Same problem, charging until 90-93%, the charging stop! It is charge with ipad mini came with adapter.
1. Brand new ipad mini came with 80% remainning batt life, drained it to 0%. Charge it with came with adapter. And stop at 93%
2. Drained it again to 0%, charge it with ipad mini came with adapter, stop at 90%.
3. Factory reset by Apple Store, charge it with original adapter from 59% left, it went up and stop to 90% only.
4. Drained it to 50%, use iphone 4S adapter, reached 100% successfully.
5. Drained it to 0%, use iphone 4S adapter, reached 100% successfully.
Seems like Apple shipped problematic adapter to many of us..
Called twice to Apple call centre.
Visited Apple store once =(
Going to visit again since I schedule an appt for adapter replacement!
Disappointed with Apple quality management.
I experienced the same problem with my iPad mini. At first we thought its the connector's copper coating so we plug unplug it to the adaptor until it started charging again. However after several charging the problem is still the same wherein charging stops at 91%. I will call apple tomorrow or probably go to the nearest service center to check my adaptor. Its quite disappointing since I never experience that problem with my previous iPad generations. :'(